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QAIPMT-2011-Ph-1899: NEET 2011 Physics - Class 11 AIPMT-2011-Ph-1899 Solution: When 1 kg of ice at \(0^ C\) melts to water at \(0^ C\), the…

When 1 kg of ice at 0∘C0^\circ C melts to water at 0∘C0^\circ C, the resulting change in its entropy, taking latent heat of ice to be 80 cal/g, is

Multiple Choice Options

  • A 273 cal/K
  • B 8×1048\times10^4 cal/K
  • C 80 cal/K
  • D 293 cal/K

Step-by-Step Verified Solution

Change in entropy is given by d S = d Q T _ _ S = _ Q T = m L f 273 _ S = 1000 _ 80 273 = 293 c a l / K Note : In the question paper unit of latent heat of ice is given to be cal/�C. It is wrong. The unit of latent heat of ice is cal/g.

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